CN202301902U

CN202301902U - Reverse gear locking mechanism of automobile transmission

Info

Publication number: CN202301902U
Application number: CN201120324104XU
Authority: CN
Inventors: 关茂楠; 郭明亮
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2011-08-31
Filing date: 2011-08-31
Publication date: 2012-07-04
Anticipated expiration: 2021-08-31

Abstract

The utility model relates to an operating structure of an automobile transmission, particularly to a reverse gear locking mechanism of the automobile transmission. The reverse gear locking mechanism includes a safety block (2) fixedly connected with a shifting shaft (1) and a shifting head (3) fixed on the safety block (2), wherein the shifting head (3) extends from a through hole (5) in an interlocking plate (4) fixed in a box body of the transmission. During gear selecting and shifting, the shifting head can limit direct shifting from a fifth gear to a reverse gear through contacted coordination with a shifting block (6) of a failsafe and limit device fixed on the interlocking plate (4); a first corner (7) and a second corner (8) are arranged at a certain angle on the shifting block (6); and during direct shifting of the shifting shaft (1) from the fifth gear to the reverse gear, through contacted coordination between the second corner (8) and the interlocking plate (4), the operation is limited by the first corner (7) and the shifting head (3) through contact. The reverse gear locking mechanism reduces the space occupied by the failsafe and limit device, and further enables the operation to be more flexible.

Description

The automotive transmission reverse gear latching mechanism

Technical field

The utility model relates to a kind of handle structure of automotive transmission, specifically relates to a kind of automotive transmission reverse gear latching mechanism.

Background technique

For automotive transmission, reverse gear latching mechanism is an important safeguarding mechanism, in vehicle traveling process; Occur five and keep off when getting into the misoperation of reversing gear, the transmission gear case will take place to impact greatly, cause the damage of speed changer component; Thereby cause power interruption, the Security that influence is driven should be provided with the lock that reverses gear for this reason; The effect of locking of reversing gear is in order to prevent this misoperation, the latch functions of reversing gear when providing automobile to move ahead.Present domestic transverse type manual speed variator adopts the insurance institution of reversing gear of shifting block, catch or the lock shaft formula of reversing gear more; Like the applicant in the automotive transmission of on June 30th, the 2011 application error prevention device (application number is 2011101819399) that reverses gear; This device is equipped with the gearshift axle that has the shifting block of shifting gears; This device comprises that the fixed plate, the location that are connected with case of transmission are arranged on the mistake proofing limit stoper on the fixed plate; Described gearshift shifting block is stretched out by the through hole on the fixed plate; And when five retainings and the choosing of reversing gear are hung with the mating reaction of mistake proofing limit stoper, described mistake proofing limit stoper is got into when reversing gear by five retainings at the gearshift shifting block, through with offer the restraint that the restriction of gearshift shifting block is as above moved cooperating of fixed plate.It is simple in structure, using effect is better, can effectively avoid directly hanging the misoperation of to reverse gear by five retainings, and matching requirements is low the failure risk of having avoided wearing and tearing to produce simultaneously.In this structure, the parts with gearshift shifting block contact matching that play the mistake proofing qualification of reversing gear are automatic shifting block, but it is by forming with the shifting block and the limited part of gearshift shifting block contact matching, and its overall dimensions is bigger, has increased institute and has taken up space.

Summary of the invention

Be to solve the deficiency that exists in the existing technology, the utility model provides a kind of scheme in the background technique has been made improved automotive transmission reverse gear latching mechanism, is reducing to make operation more flexible on the basis that the mistake proofing limit stoper taken up space.

For realizing above-mentioned purpose; The automotive transmission reverse gear latching mechanism of the utility model comprises with a gearshift safety block that is connected, is fixed on the shifting block on the safety block, and this shifting block is stretched out by the through hole that is fixed on the interlock board in the mission case; When selecting gear shift operation; Its through with the shifting block contact matching that is fixed on the mistake proofing limit stoper on the interlock board, restriction is directly hung to reverse gear by five retainings, described shifting block has first corner and second corner of angled setting; Have five retainings when directly hanging the action of to reverse gear at gearshift axle, second corner through shifting block cooperates with the conflict of interlock board, is limited an as above action of shifting gears spool by first corner and contacting of shifting block.

As qualification to aforesaid way, the mistake proofing limit stoper by be fixed on rivet on the interlock board, the rotating torsion spring that is sleeved on shifting block on the rivet, is connected with shifting block is formed, described torsion spring provides all the time and makes shifting block return to the restoring force of original state.

As further qualification to aforesaid way, when the shifting block original state, be fixed with convexity on the interlock board corresponding position of position, second corner, two of described torsion spring turn round arm and embrace and hug on second corner and convexity.

As the further qualification to aforesaid way, two of described torsion spring turn round arm intersects to embrace and hugs on second corner and convexity.

As qualification to aforesaid way; On interlock board, be provided with outstanding crimping; Have five retainings when directly hanging the action of to reverse gear at gearshift axle, second corner through shifting block cooperates with the conflict of crimping, is limited an as above action of shifting gears spool by first corner and contacting of shifting block.

As improvement to aforesaid way, below safety block, be provided with rectangle groove, have at the mission case internal fixation and can insert in the rectangle groove, gear chosen the gear holding down bolt that limits in the relative movement process of realization and rectangle groove.

Adopt technique scheme; Because the shifting block of mistake proofing limit stoper has first corner and second corner of angled setting, have five retainings when directly hanging the action of to reverse gear at the gearshift axle, second corner through shifting block cooperates with the conflict of interlock board; By of the as above action that contact restriction gearshift axle of first corner with shifting block; Therefore, under the prerequisite that guarantees first corner and second corner, not strict to the overall dimensions requirement of shifting block; Can further dwindle the size of mistake proofing limit stoper, reduce requirement the space; On interlock board, be provided with outstanding crimping, to realize the position-limiting action that stops to second corner, the structural complexity of having avoided the additional components increase to bring makes overall structure compact more.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is done further to specify:

Fig. 1 is the overall structure schematic representation of the utility model;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 for shown in Figure 2 at five retainings with the structural representation of the shifting block position when choosing of reversing gear;

The structural representation of shifting block position when Fig. 4 reverses gear for five retainings shown in Figure 2 get into;

Fig. 5 is the worm's eye view of Fig. 1.

Among the figure: 1, gearshift axle; 2, safety block; 3, shifting block; 4, interlock board; 5, through hole; 6, shifting block; 7, first corner; 8, second corner; 9, rivet; 10, torsion spring; 11, convexity; 12, turn round arm; 13, crimping; 14, gear holding down bolt; 15, rectangle groove.

Embodiment

The automotive transmission reverse gear latching mechanism of the utility model is on existing mechanism basis, and the shape of shifting block 6 is made improvement, below the structure that the utility model related to through two parts be described in detail as follows:

As the structure identical with existing technology; Can find out like Fig. 1-shown in Figure 5; The automotive transmission reverse gear latching mechanism of the utility model comprises the safety block 2 that is connected with gearshift axle 1, is fixed on the shifting block 3 on the safety block 2; Shifting block 3 is stretched out by the through hole 5 that is fixed on the interlock board 4 in the mission case; Below safety block 2, be provided with rectangle groove 15, the shape of the rectangle groove 15 that present embodiment adopts is identical with the shape of rectangle groove in the existing manual transmission gearshift structure, can clearly find out its concrete structure by Fig. 5; The free end that is fixed on the gear holding down bolt 14 in the mission case (not shown) moves in rectangle groove 15, has realized that the gear when 15 pairs of gears of rectangle groove are chosen limits.

Be provided with interlock board 4 at the mission case internal fixation; Interlock board 4 is L shaped structure; Its vertical side is used for realizing being connected with mission case or gear shift lid, is parallel on the horizontal end face of gearshift axle 1 axis, and relative and rectangle groove 15 is provided with a through hole 5; Shifting block 3 probes in this through hole 5; The size of through hole 5 should produce corresponding relation with the size of rectangle groove 15, and guarantees in the stroke of gear holding down bolt 14 moving axially in rectangle groove 15 in, axial rotation, and through hole 5 is moving axially of shifting block 3 and rotation provides corresponding space.

On interlock board 4, be provided with a mistake proofing limit stoper; This mistake proofing limit stoper is made up of the rivet 9, torsion spring 10, the shifting block 6 that are fixed on the interlock board 4; Wherein, Torsion spring 10 all is sleeved on the rivet 9 with shifting block 6, and shifting block 6 can rotate relative to rivet 9, and torsion spring 10 provides a restoring force of replying to initial position all the time for shifting block 6; This initial position be appreciated that for: directly hang five retainings by neutral or directly hang when to reverse gear at gearshift axle 1, shifting block 6 does not limit the position of the motion of shifting block 3 in through hole 5.

As the improvement part of the utility model, shifting block 6 has first corner 7 and second corner 8 of angled setting; Have five retainings when directly hanging the action of to reverse gear at gearshift axle 1, second corner 8 through shifting block 6 cooperates with the conflict of interlock board 4, limits spool 1 the as above action of shifting gears by first corner 7 and contacting of shifting block 3.Specifically; By finding out clearly among Fig. 2; The middle part of shifting block 6 is a round structure, and this structure also is the part that is sleeved on the rivet 9, on the initial position of shifting block 6, the interlock board 4 corresponding with second corner, is fixed with a convexity 11; Hug for the ease of torsion spring 10 and embracing of protruding 11, second corner 8; Be arranged to the identical two-part of structure with protruding 11 with second corner 8, like the rectangular configuration of present embodiment, two of torsion spring 10 turn round arm intersects to embrace and hugs on convexity 11 and second corner 8.Being arranged so that first corner 7 receives the stirring power of shifting block 3 of this structure and when driving second corner 8 and rotating; One of them of torsion spring 10 turned round the arm use and contacted with protruding 11; And another is turned round arm and carries out producing in the rotating process restoring force with second corner 8; When shifting block 6 was applied to the external force disappearance on first corner 7, torsion spring 10 resetted shifting block 6.As shown in Figure 3; Carry out five retainings or reverse gear when choosing at

gearshift axle

1,1 axial motion of gearshift axle is to drive the middle groove position that gear holding down bolt 14 is positioned at five retainings and reverses gear, at this moment; Shifting block 3 is positioned at the relevant position of through hole 5 equally; 3 pairs first corners 7 of shifting block have applied an axial pressure, and shifting block 6 and initial position are clockwise rotated, because second corner 8 is except receiving the restriction of turning round no any barrier force the restoring force that arm 12 progressively increases; Therefore, shifting block 3 can be in position shown in Figure 3 with the through hole space of the unobstructed entering and arranged on left and right sides of rotation of gearshift axle.

When the driver because misoperation, directly hang when to reverse gear by five retainings, by shown in Figure 4; Because the shifting block 3 and first corner 7 break away from when five gears are put, first corner 7 resets under the effect of torsion spring 10, when shifting block 3 rotates from left to right; Through promoting the left end in first corner 7, stir shifting block 6 and rotate counterclockwise, soon getting into when reversing gear gear; Conflict with the crimping that is fixed on the convexity on the interlock board 4 13 in second corner 8; Limit being rotated further of shifting block 6, and then limited the rotation of gearshift axle 1, avoided the danger that causes by the misoperation that the direct extension of five retainings to reverse gear.

Claims

1. automotive transmission reverse gear latching mechanism; Comprise the safety block (2) that is connected with gearshift axle (1), be fixed on the shifting block (3) on the safety block (2); This shifting block (3) is stretched out by the through hole (5) that is fixed on the interlock board (4) in the mission case; When selecting gear shift operation; Its through with shifting block (6) contact matching that is fixed on the mistake proofing limit stoper on the interlock board (4), restriction is directly hung to reverse gear by five retainings, it is characterized in that: described shifting block (6) has first corner (7) and second corner (8) of angled setting; Have five retainings when directly hanging the action of to reverse gear at gearshift axle (1), second corner (8) through shifting block (6) cooperates with the conflict of interlock board (4), limits an as above action of shift gears spool (1) by first corner (7) with contacting of shifting block (3).

2. automotive transmission reverse gear latching mechanism according to claim 1; It is characterized in that: the mistake proofing limit stoper is by being fixed on rivet (9) on the interlock board (4), rotatingly being sleeved on that rivet (9) is gone up shifting block (6), the torsion spring (10) that is connected with shifting block (6) is formed, and described torsion spring (10) provides all the time and makes shifting block (6) return to the restoring force of original state.

3. automotive transmission reverse gear latching mechanism according to claim 2; It is characterized in that: when shifting block (6) original state, be fixed with convexity (11) on interlock board (4) corresponding position of position, second corner (8), two of described torsion spring (10) turn round arm (12) and embrace and hug on second corner (8) and protruding (11).

4. automotive transmission reverse gear latching mechanism according to claim 3 is characterized in that: two of described torsion spring (10) turn round arm (12) intersects to embrace and hugs on second corner (8) and protruding (11).

5. automotive transmission reverse gear latching mechanism according to claim 1; It is characterized in that: on interlock board (4), be provided with outstanding crimping (13); Have five retainings when directly hanging the action of to reverse gear at gearshift axle (1); Second corner (8) through shifting block (6) cooperates with the conflict of crimping (13), by first corner (7) the as above action that contacts restriction gearshift axle (1) with shifting block (3).

6. according to the said automotive transmission reverse gear latching mechanism of claim 1; Its characteristic also is: be provided with rectangle groove (15) in safety block (2) below, have at the mission case internal fixation and can insert in the rectangle groove (15), gear chosen the gear holding down bolt (14) that limits in the relative movement process of realization and rectangle groove (15).